190 views

1 Answer

Answer :

In a distribution system, in order to improve power factor, the synchronous capacitors are installed at the receiving end.

Like 0 like

Please log in or register to answer this question.

Related questions

189 views

Description : Why capacitors are used to improve power factor?

Last Answer :  Capacitors generate reactive power instead of that drawn from source which is required by inductive loads.so it reduce the reactive current which is drawn from source to be drawn from capacitor.This control in Electric bills cost.

3 answers
92 views

Description : Can a synchronous condenser improve power factor?

Last Answer : Yes, synchronous condenser can improve power factor.

1 answer
80 views

Description : How can we improve power factor using synchronous motor?

0 answers
181 views

Last Answer : For high value of diversity factor, a power station of given installed capacity will be in a position to supply more number of consumers.

1 answer
86 views

Description : Capacitors for power factor correction are rated in?

Last Answer : Capacitors for power factor correction are rated in kVAR.

1 answer
166 views

Description : How does a capacitor improve power factor?

Last Answer : Every circuit are usually more inductive than capacitive.it means that the current lags by voltage at small angle.hence we have to compensate this situation so we use Capacitor then this lag is compensate ... angle becomes low and the value of cos(phase angle) is increase and hence power also max.

1 answer
122 views

Last Answer : The primary reason for low power factor is supply system is due to installation of induction motors.

1 answer
358 views

Description : In a synchronous generator delivering lagging power factor load  (1) the excitation emf leads terminal voltage by the power angle (2) the excitation emf lags terminal voltage by the power angle (3) ... by the power factor angle (4) excitation emf lags the terminal voltage by the power factor angle

Last Answer : In a synchronous generator delivering lagging power factor load the excitation emf leads terminal voltage by the power angle

1 answer
103 views

Description : The power factor angle and torque angle of a salient pole synchronous generator drawing a current of 1.0 pu from a lagging load are 45o and 15o, respectively. The direct axis and quadrature axis currents, respectively, are (A) 0.5 pu ... pu, 0.5 pu (C) 0.707 pu, 0.707 pu (D) 0.5 pu, 0.5 pu

Last Answer : The power factor angle and torque angle of a salient pole synchronous generator drawing a current of 1.0 pu from a lagging load are 45o and 15o, respectively. The direct axis and quadrature axis currents, respectively, are 0.866 pu, 0.5 pu

1 answer
178 views

Description : A synchronous motor has better power factor as compared to that of an equivalent induction motor. This is mainly because?

Last Answer : A synchronous motor has better power factor as compared to that of an equivalent induction motor. This is mainly because stator supply is not required to produce magnetic field.

1 answer
101 views

Last Answer : The standard full-load power factor ratings for synchronous motors are unity or 0.8 leading.

1 answer
112 views

Last Answer : For power factor correction, synchronous motors operate at no-load and greatly over-excited fields.

1 answer
129 views

Description : If we change the excitation of synchronous machine will it affect on power factor?

Last Answer : Yes, If we change the excitation of synchronous machine it will affect on power factor. If the synchronous motor is overexcited then it will have leading power factor and if the motor is underexcited then it will have lagging power factor.

1 answer
158 views

Description : If the load of the normally excited synchronous motor is increased the power factor will?

Last Answer : If the load of the normally excited synchronous motor is increased the power factor will become lagging.

1 answer
178 views

Description : The synchronous motor which works on leading power factor and does not drive any mechanical load is called?

Last Answer : The synchronous motor which works on leading power factor and does not drive any mechanical load is called synchronous condenser.

1 answer
508 views

Description : If the field of synchronous motor is under excited, power factor will be?

Last Answer : If the field of synchronous motor is under excited, power factor will be lagging.

1 answer
113 views

Last Answer : Yes, we can make the power factor of synchronous motor leading by adjusting its excitation.

1 answer
106 views

Description : The benefit of power factor correction in a power system is (A) lower power consumption (B) increased demand charge (C) reduced load carrying capabilities in existing lines (D) reduced voltage profile

Last Answer : The benefit of power factor correction in a power system is lower power consumption

1 answer
151 views

Description : Power factor of the system is kept high?

Last Answer : Power factor of the system is kept high to reduce line losses, to maximise the utilization of the capacities of generators, lines and transformers, to reduce voltage regulation of the line.

1 answer
219 views

Last Answer : In an interconnected system, the diversity factor of the whole system increases.

1 answer
71 views

Description : Grid distribution system

Last Answer : Grid distribution system:-  In this system, when the feeder or loop or ring is charged (energized) by two or more than two substations from two or more than two different generating stations then it is known as “Grid distribution system. In this system only one feeder is utilized at a time. 

1 answer
195 views

Description : Define: primary and secondary distribution system 

Last Answer : i) Primary Distribution:  It is a 3-phase, 3-wire transmission line connected in between receiving substation to Distribution substation. OR It is link between receiving substation & ... substation to consumer line. OR It is link between distribution transformer substation & consumer. 

1 answer
128 views

Description : State the losses in secondary distribution system. 

Last Answer : The losses in secondary distribution system: a) Technical losses: 1. Due to poor voltage 2. Due to unbalance load 3. Due poor quality of transformer & its components 4. Due to poor quality ... of induction type of energy meter. 3. Lack of administration. 4. Energy theft 5. Unmetered supply

1 answer
92 views

Description : requirements of a distribution system

Last Answer : Following requirements of a distribution system.  1. Layout should be simple in design. 2. It should have less initial cost 3. The distribution system should have minimum distribution ... stability of existing distribution system. 15. Time required for completion of work should be less. 

1 answer
144 views

Description : Why radial distribution system used for short distance ? 

Last Answer : Because of following disadvantages radial distribution system is not used for long distance:  Since there is only one feeder to DTC feed at one point so, 1) There is no reliability ... more time for fault finding & repairing Hence radial distribution system is used for short distance.

1 answer
209 views

Description : Explain following techniques related to energy conservation in transmission and distribution system. (i) By balancing phase currents (ii) Variable technical losses (I2R losses).

Last Answer : (i) Balancing Phase currents: Proper (healthy balanced) three phase loads always draw equal currents in all lines but single phase loads in the 3 phase 4 wire system or loads connected between two ... . 11) Minimize I2R losses. 12) Balance the load currents. 13) Regulate the system voltages.

1 answer
500 views

Description : The permissible voltage variation in transmission and distribution system is:  (A) ± 0.1% (B) ± 1% (C) ±10% (D) ± 25%

Last Answer : The permissible voltage variation in transmission and distribution system is: ±10%

1 answer
360 views

Description : The main criterion for selection of the size of a radial distribution system is

Last Answer : The main criterion for selection of the size of a radial distribution system is voltage drop

1 answer
94 views

Last Answer : An induction motor has relatively high power factor at near full load.

1 answer
211 views

Last Answer : For a consumer the most economical power factor is generally 0.95 lagging .

1 answer
113 views

Last Answer : Load factor of a power station is generally less than unity.

1 answer
336 views

Last Answer : Load factor of a power station is defined as average load/maximum demand.

1 answer
124 views

Description : What is the maximum value of power factor?

Last Answer : 1 is the maximum value of power factor.

1 answer
131 views

Last Answer : In a power or distribution transformer about 10 percent end turns are heavily insulated to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns.

1 answer
197 views

Description : What is the value of capacitance required to improve power factor from 0.7 to 0.9. Given that: Real power = 50 W Vrms of the source = 120 Frequency = 50 Hz   #powerfactor

0 answers
100 views

Description : The maximum reluctance power of a salient-pole synchronous motor having direct-axis reactance, 1.0 pu and quadrature-axis reactance, 0.5 pu, and input voltage, 1.0 pu is (A) 0.25 pu (B) 0.5 pu (C) 1.0 pu (D) 1.5 pu

Last Answer : The maximum reluctance power of a salient-pole synchronous motor having direct-axis reactance, 1.0 pu and quadrature-axis reactance, 0.5 pu, and input voltage, 1.0 pu is 0.5 pu

1 answer
98 views

Last Answer : Synchronsizing power of a synchronous machine is inversely proportional to the synchronous reactance.

1 answer
249 views

Description : The synchronous motor will develop maximum power when the load angle is?

Last Answer : The synchronous motor will develop maximum power when the load angle is 900.

1 answer
1.4k views

Description : A control system having unit damping factor will give  (1) Oscillatory response (2) Undamped response (3) Critically damped response (4) No response

Last Answer : 1

2 answers
417 views

Description : The damping factor of a particular system is unity, the system response will be

Last Answer : The damping factor of a particular system is unity, the system response will be critically damped

1 answer
11 views

Description : How is marble floor installed?

Last Answer : After the cladding tiles made from natural marble began to appear on the market, it became possible to arrange real marble floors. Increasingly, marble floors can be found in residential mansions and ... . It is also desirable to treat the surface of the marble with a protective polymerizing film.

1 answer
340 views

Description : Phase modifier is normally installed

Last Answer : Phase modifier is normally installed in case of long lines

1 answer
153 views

Last Answer : An isolator is installed generally on both sides of a circuit breaker.

1 answer
105 views

Last Answer : For cost and safety, the outdoor substations are installed for voltages above 33 kV.

1 answer
182 views

Description : Capacitors

Last Answer : .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

2 answers
111 views

Description : State any four types of capacitors.

Last Answer : Types of capacitors: i) Air capacitor ii) Paper capacitor iii) Mica capacitor iv) Ceramic capacitor v) Electrolytic capacitor vi) Poly-carbon capacitor

1 answer
105 views

Description : What is the charge on each capacitor when a 150 V is applied across two capacitors with values 5 μF and 10 μF, connected in series? A) 500 μC B) 0.5 μC C) 0.5 C D) None of these

Last Answer : What is the charge on each capacitor when a 150 V is applied across two capacitors with values 5 μF and 10 μF, connected in series? A) 500 μC B) 0.5 μC C) 0.5 C D) None of these

1 answer
343 views

Description : The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as

Last Answer : The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as non-linear circuit.

1 answer
...